package com.itheima.consumer.controller;

import com.itheima.consumer.domain.Goods;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import java.net.URI;
import java.util.List;

/**
 * Created with IntelliJ IDEA.
 *
 * @Author: ly
 * @Date: 2021/08/17/14:17
 * @Description:
 */
@RestController
@RequestMapping("/order")
public class OrderController {

    @Autowired
    private RestTemplate restTemplate;


    @Autowired
    private DiscoveryClient discoveryClient;


    @GetMapping("/goods/{id}")
    public  Goods OrdergetOne(@PathVariable ("id") int id){
   /*
            //远程调用Goods服务中的findOne接口
            使用RestTemplate
            1. 定义Bean  restTemplate
            2. 注入Bean
            3. 调用方法
         */

        /*
            动态从Eureka Server 中获取 provider 的 ip 和端口
             1. 注入 DiscoveryClient 对象.激活
             2. 调用方法


         */

     List<ServiceInstance> instances = discoveryClient.getInstances("EUREKA-PROVIDER");

        if (null==instances || instances.size()==0){
            return null;
        }

        ServiceInstance instance = instances.get(0);
        String host = instance.getHost();
        int port = instance.getPort();
        System.out.println(host);
        System.out.println(port);


        //System.out.println("你好");


        String url = "http://"+host+":"+port+"/provider/getOne/"+id;
        Goods goods = restTemplate.getForObject(url, Goods.class);
        return  goods;

       // return null;
        //new Goods(1,"菜鸟程序员",2500.2,2);
    }
}
